<!DOCTYPE html>
<html>
<head>
<script src="../../resources/js-test.js"></script>
<script src="resources/common.js"></script>
</head>
<body>
<p id="description"></p>
<div id="console"></div>

<script>
description("Make sure that the usages of an AES key are respected");

jsTestIsAsync = true;

var data = asciiToUint8Array("hello");
var iv = new Uint8Array(16);

function importKeyExcludingUsage(usage)
{
    var algorithm = {name: 'aes-cbc'};
    var extractable = false;
    var keyData = hexStringToUint8Array("2b7e151628aed2a6abf7158809cf4f3c");

    var usages = ["encrypt", "decrypt", "wrapKey", "unwrapKey"];
    for (var i in usages) {
        if (usages[i] == usage) {
            usages.splice(i, 1);
            break;
        }
    }

    return crypto.subtle.importKey('raw', keyData, algorithm, extractable, usages);
}

function testEncrypt()
{
    return importKeyExcludingUsage("encrypt").then(function(key) {
        return crypto.subtle.encrypt({name: 'AES-CBC', iv: iv}, key, data);
    }).then(failAndFinishJSTest, function(result) {
        logError(result);
    });
}

function testDecrypt()
{
    return importKeyExcludingUsage("decrypt").then(function(key) {
        return crypto.subtle.decrypt({name: 'AES-CBC', iv: iv}, key, data);
    }).then(failAndFinishJSTest, function(result) {
        logError(result);
    });
}

// FIXME: Add wrapKey() and unwrapKey()

testEncrypt().then(testDecrypt).then(finishJSTest, failAndFinishJSTest);

</script>

</body>
</html>
